The compression filter driver is introduced as suggested by Max.
A sample usage of the filter can be found in the test #214.
Now, multiple clusters can be written compressed.
It is useful for the backup job.
v6: The new approach to write compressed data was applied. The patch
v5 4/4 with the block-stream compress test case was removed from
the series.
Discussed in the email thread with the message ID
<1571603828-185910-1-git-send-email-andrey.shinkev...@virtuozzo.com>
Andrey Shinkevich (3):
block: introduce compress filter driver
qcow2: Allow writing compressed data of multiple clusters
tests/qemu-iotests: add case to write compressed data of multiple
clusters
block/Makefile.objs | 1 +
block/filter-compress.c | 212 +++++++++++++++++++++++++++++++++++++++++++++
block/qcow2.c | 102 ++++++++++++++++------
qapi/block-core.json | 10 ++-
tests/qemu-iotests/214 | 43 +++++++++
tests/qemu-iotests/214.out | 14 +++
6 files changed, 351 insertions(+), 31 deletions(-)
create mode 100644 block/filter-compress.c
--
1.8.3.1
